I followed all the instruction of getting-started on my Mac OS. I took vagrant and virtualbox as my testing environment. When I try to run the command on the agent01:
python3.5 /usr/local/lib/python3.5/dist-packages/indy_client/test/agent/acme.py --port 6666 --network private_network

I’m not sure, but I believe that the vagrant/virtualbox route is unsupported for macs. I would personally recommend docker for now, because I know for sure that other people have had success on their macs with that.

If you need more help, you might be able to get more people’s attention by posting in the #indy-sdk channel of hyperledger’s chatroom. You’ll need to get a free Linux foundation login for that.